The proper conduct of the Pharmacopeial tests and assays and the reliability of the results depend,in part,upon the quality of the reagents used in the performance of the procedures.Unless otherwise specified,reagents are to be used that conform to the specifications set forth in the current edition of Reagent Chemicalspublished by the American Chemical Society.Where such ACSreagent specifications are not available or where for various reasons the required purity differs,compendial specifications for reagents of acceptable quality are provided (see Reagents,Indicators,and Solutions).Listing of these reagents,including the indicators and solutions employed as reagents,in no way implies that they have therapeutic utility;furthermore,any reference to USPor NFin their labeling shall include also the term “reagent”or “reagent grade.”